Oxford PV achieves new efficiency record with tandem solar cell

UK-based Oxford PV has achieved a new efficiency record for commercial-sized solar cells. The silicon and perovskite-based tandem cell has an area of 258.15 square centimeters with an edge length of 16.1 centimeters (M4 format) and reaches an efficiency of 28.6 percent, 1.9 percentage points higher than the record set by Oxford PV in May 2022. At laboratory scale, the company had achieved 29.5 percent efficiency in December 2020.
The record was confirmed by the Fraunhofer Institute for Solar Energy Systems ISE. The cell comes from the production facility in Brandenburg an der Havel, Germany, where Oxford says it has already begun manufacturing commercial tandem solar cells. These have an efficiency of 27 percent. Originally, series production was to start as early as 2021 and the first tandem modules were to be launched on the market in 2022. However, the schedule had been repeatedly delayed.
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